Intraosseous gas, also known as osseous pneumatosis, refers to the accumulation of gas bubbles within the cortical bone, trabecular bone, the bone marrow, or in the medullary cavity.
Intraosseous gas is an uncommon finding and differentials include 1,2:
- infections
- emphysematous osteomyelitis - intramedullary gas is specific 2
- neoplastic
- lymphangiomatosis of bone 3
- unicameral bone cyst - may contain gas 3
-
iatrogenic
- biopsy
- surgery
- trauma
- penetrating wounds
- fractures
- others
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